Results 11 to 20 of about 6,090 (227)

Terahertz spectral properties of glucose and two disaccharides in solid and liquid states

iScience, 2022
Summary: The vibrational and rotational frequencies of most biological macromolecules fall within the terahertz (THz) band; therefore, the THz wave has a strong ability to distinguish substances.
Haiyun Huang, Siyu Shao, Guoyang Wang, Ping Ye, Bo Su, Cunlin Zhang   +5 more
doaj   +1 more source

Applications of Terahertz Spectroscopy in the Detection and Recognition of Substances

Frontiers in Physics, 2022
Recently, terahertz spectroscopy has received a lot of attention because of its unique properties such as biosafety, fingerprint spectrum, and good penetration.
Xiaojian Fu, Xiaojian Fu, Yujie Liu, Qi Chen, Yuan Fu, Tie Jun Cui, Tie Jun Cui   +6 more
doaj   +1 more source

Progress in application of terahertz time-domain spectroscopy for pharmaceutical analyses

Frontiers in Bioengineering and Biotechnology, 2023
Terahertz time-domain spectroscopy is an analytical method using terahertz time-domain pulses to study the physical and chemical properties of substances.
Shuteng Huang, Hanxiu Deng, Xia Wei, Jiayu Zhang   +3 more
doaj   +1 more source

Coherent two-dimensional terahertz-terahertz-Raman spectroscopy [PDF]

Proceedings of the National Academy of Sciences, 2016
Significance The thermally populated motions of liquids, including hydrogen bonds, low-energy bending vibrations, conformational torsions, and hindered rotations, are resonant in the terahertz region of the spectrum. These motions regulate solvation, macromolecular structure, and vibrational energy flow in liquid-phase chemistry.
Finneran, Ian A., Welsch, Ralph, Allodi, Marco A., Miller, Thomas F., III, Blake, Geoffrey A.   +4 more
openaire   +3 more sources

Using microfluidic technology to measure the terahertz absorption properties of phase-changing thermoregulated emulsions

Materials Research Express, 2022
Phase-changing materials (PCMs) are widely used thermal-energy-storage substances that utilize the absorption and emission of heat during the solid–liquid–solid phase change of a substance to store and release thermal energy, which is closely related to ...
Jing-Yi-Ran Jin, Bo Peng, Qing-Hao Meng, Si-Yu Qian, Bo Su, Hai-Lin Cui, Cun-Lin Zhang   +6 more
doaj   +1 more source

Analytical Terahertz Spectroscopy

Analytical Sciences, 2008
Recent progress in analytical terahertz (THz) spectroscopy is reviewed with illustrative examples showing that it is an effective method for detecting and identifying intermolecular interactions in chemical compounds, such as hydrogen bonds. The unique and characteristic properties of THz waves, their significance to both science and industry, and the ...
Yuko, Ueno, Katsuhiro, Ajito
openaire   +3 more sources

Terahertz Rotational Spectroscopy [PDF]

Proceedings of the International Astronomical Union, 2005
The detection of interstellar molecules relies on the precise knowledge of spectral line positions from laboratory measurements. Technical developments of recent years have led to an extension of the accessible spectral range towards shorter wavelengths. New telescopes like SOFIA, the HIFI instrument aboard the Herschel satellite, and ALMA will be used
T. F. Giesen, S. Brünken, M. Caris, P. Neubauer-Guenther, U. Fuchs, G. W. Fuchs, F. Lewen   +6 more
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Magnetic and Terahertz–Infrared Properties of Nanodispersed Hexaferrite Sr_xBa_(1−x)Fe₁₂O₁₉ Solid Solutions

Crystals, 2023
Hexagonal ferrites with the formula SrxBa(1−x)Fe12O19 (x = 0; 0.3; 0.5; 0.7; and 1) were prepared using the citrate method. The main feature of this synthesis is a relatively low calcination temperature of 700 °C.
Andrey Kovalev, Denis Vinnik, Svetlana Gudkova, Dmitry Zherebtsov, Vladimir Zhivulin, Sergey Taskaev, Elena Zhukova, Asmaa Ahmed, Pavel Abramov, Mikhail Talanov   +9 more
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Biochar as a low-cost, eco-friendly, and electrically conductive material for terahertz applications

Scientific Reports, 2021
We investigate conducting characteristics of biochar derived from the pyrolysis of a paper at terahertz frequencies. Paper is annealed under temperatures ranging from 600 to 1000 °C to modify structural and electrical properties.
Woongkyu Park, Hyuntae Kim, Hajung Park, Soobong Choi, Sung Ju Hong, Young-Mi Bahk   +5 more
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Lipids monitoring in Scenedesmus obliquus based on terahertz technology

Biotechnology for Biofuels, 2020
Background Microalgae are considered as a source of low pollution and renewable fuel due to their ability to synthesize an abundance of lipids.
Yongni Shao, Weimin Gu, Y ating Qiu, Shengfeng Wang, Yan Peng, YiMing Zhu, Songlin Zhuang   +6 more
doaj   +1 more source